package com.cynteka.cyfoman.core.validator;

import com.cynteka.cyfoman.core.ComplexPropertyResolver;
import com.cynteka.cyfoman.core.IPropertyResolver;
import org.apache.commons.validator.Field;
import org.apache.commons.validator.GenericTypeValidator;
import org.apache.commons.validator.GenericValidator;
import org.apache.commons.validator.Validator;

/**
 * User: Sergey
 * Date: 08.08.11
 * Time: 19:18
 */
public class CyfomanValidator {

    static IPropertyResolver propertyResolver = new ComplexPropertyResolver();

    /**
     * Checks if the field is required.
     *
     * @return boolean If the field isn't <code>null</code> and
     *         has a length greater than zero, <code>true</code> is returned.
     *         Otherwise <code>false</code>.
     */
    public static boolean validateRequired(Object bean, Field field) {
        Object oValue = propertyResolver.getProperty(bean, field.getProperty());
        // String value = getValueAsString(bean, field.getProperty());
        String value = String.valueOf(oValue);

        return !GenericValidator.isBlankOrNull(value);
    }

    /**
     * Checks if the field can be successfully converted to a <code>byte</code>.
     *
     * @return boolean        If the field can be successfully converted
     * to a <code>byte</code> <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateByte(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isByte(value);
    }

    /**
     * Checks if the field can be successfully converted to a <code>short</code>.
     *
     * @return boolean        If the field can be successfully converted
     * to a <code>short</code> <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateShort(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isShort(value);
    }

    /**
     * Checks if the field can be successfully converted to a <code>int</code>.
     *
     * @return boolean        If the field can be successfully converted
     * to a <code>int</code> <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateInt(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isInt(value);
    }

    /**
     * Checks if field is positive assuming it is an integer
     *
     * @param field Description of the field to be evaluated
     * @return boolean     If the integer field is greater than zero, returns
     *         true, otherwise returns false.
     */
    public static boolean validatePositive(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericTypeValidator.formatInt(value).intValue() > 0;
    }

    /**
     * Checks if the field can be successfully converted to a <code>long</code>.
     *
     * @return boolean        If the field can be successfully converted
     * to a <code>long</code> <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateLong(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isLong(value);
    }

    /**
     * Checks if the field can be successfully converted to a <code>float</code>.
     *
     * @return boolean        If the field can be successfully converted
     * to a <code>float</code> <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateFloat(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isFloat(value);
    }

    /**
     * Checks if the field can be successfully converted to a <code>double</code>.
     *
     * @return boolean        If the field can be successfully converted
     * to a <code>double</code> <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateDouble(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isDouble(value);
    }

    /**
     * Checks if the field is an e-mail address.
     *
     * @return boolean        If the field is an e-mail address
     * <code>true</code> is returned.
     * Otherwise <code>false</code>.
     */
    public static boolean validateEmail(Object bean, Field field) {
        String value = getValueAsString(bean, field.getProperty());

        return GenericValidator.isEmail(value);
    }
    
    static String getValueAsString(Object bean, String property) {
        Object oValue = propertyResolver.getProperty(bean, property);
        // String value = getValueAsString(bean, field.getProperty());
        String value = String.valueOf(oValue);
        return value;
    }

    public final static String FIELD_TEST_NULL = "NULL";
    public final static String FIELD_TEST_NOTNULL = "NOTNULL";
    public final static String FIELD_TEST_EQUAL = "EQUAL";

    public static boolean validateRequiredIf(
            Object bean,
            Field field,
            Validator validator) {

        Object form = validator.getParameterValue(Validator.BEAN_PARAM);
        String value = null;
        boolean required = false;
        if (isString(bean)) {
            value = (String) bean;
        } else {
            value = getValueAsString(bean, field.getProperty());
        }
        int i = 0;
        String fieldJoin = "AND";
        if (!GenericValidator.isBlankOrNull(field.getVarValue("fieldJoin"))) {
            fieldJoin = field.getVarValue("fieldJoin");
        }
        if (fieldJoin.equalsIgnoreCase("AND")) {
            required = true;
        }
        while (!GenericValidator.isBlankOrNull(field.getVarValue("field[" + i + "]"))) {
            String dependProp = field.getVarValue("field[" + i + "]");
            String dependTest = field.getVarValue("fieldTest[" + i + "]");
            String dependTestValue = field.getVarValue("fieldValue[" + i + "]");
            String dependIndexed = field.getVarValue("fieldIndexed[" + i + "]");
            if (dependIndexed == null)
                dependIndexed = "false";
            String dependVal = null;
            boolean this_required = false;
            if (field.isIndexed() && dependIndexed.equalsIgnoreCase("true")) {
                String key = field.getKey();
                if ((key.indexOf("[") > -1) && (key.indexOf("]") > -1)) {
                    String ind = key.substring(0, key.indexOf(".") + 1);
                    dependProp = ind + dependProp;
                }
            }
            dependVal = getValueAsString(form, dependProp);
            if (dependTest.equals(FIELD_TEST_NULL)) {
                if ((dependVal != null) && (dependVal.length() > 0)) {
                    this_required = false;
                } else {
                    this_required = true;
                }
            }
            if (dependTest.equals(FIELD_TEST_NOTNULL)) {
                if ((dependVal != null) && (dependVal.length() > 0)) {
                    this_required = true;
                } else {
                    this_required = false;
                }
            }
            if (dependTest.equals(FIELD_TEST_EQUAL)) {
                this_required = dependTestValue.equalsIgnoreCase(dependVal);
            }
            if (fieldJoin.equalsIgnoreCase("AND")) {
                required = required && this_required;
            } else {
                required = required || this_required;
            }
            i++;
        }
        if (required) {
            if ((value != null) && (value.length() > 0)) {
                return true;
            } else {
                return false;
            }
        }
        return true;
    }

    private static Class stringClass = new String().getClass();

    private static boolean isString(Object o) {
        if (o == null) return true;
        return (stringClass.isInstance(o));
    }

}
